CN105753651A - Method for production of edible alcohol - Google Patents

Method for production of edible alcohol Download PDF

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Publication number
CN105753651A
CN105753651A CN201410788668.7A CN201410788668A CN105753651A CN 105753651 A CN105753651 A CN 105753651A CN 201410788668 A CN201410788668 A CN 201410788668A CN 105753651 A CN105753651 A CN 105753651A
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Prior art keywords
tower
column
temperature
rectification
pressure
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CN201410788668.7A
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CN105753651B (en
Inventor
刘劲松
谷立秋
刘辉
金明亮
宫殿良
郭福阳
李红梅
李志宇
康宇
赵桂彬
高尚
杨华
岳国君
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COFCO BIOCHEMICAL ENERGY (ZHAODONG) Co Ltd
Cofco Corp
Cofco Nutrition and Health Research Institute Co Ltd
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COFCO BIOCHEMICAL ENERGY (ZHAODONG) Co Ltd
Cofco Corp
Cofco Nutrition and Health Research Institute Co Ltd
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Publication of CN105753651A publication Critical patent/CN105753651A/en
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Abstract

The present invention relates to a method for production of edible alcohol, the method is as follows: maturely-fermented corn mash is distilled by a first crude tower and a second crude tower which are in parallel arrangement, then distilled sequentially through a stripper, a purification tower, a distillation column and a methanol tower to obtain edible alcohol, and the edible alcohol is adsorbed decolorized sequentially through activated carbon and diatomaceous earth to obtain a finished edible alcohol product. The second crude tower is added into the method for production of the edible alcohol, and compared with traditional methods for production of the edible alcohol, the stripper is used for the first time, so that alcohols, esters, aldehydes and other organic matters in the mashcan be effectively removed, the purity of the obtained alcohol is improved, and by addition of the adsorption decolorization step by use of the activated carbon and diatomite, taste of the edible alcohol can be improved, and the entire production process is energy-saving and environmentally-friendly.

Description

A kind of method producing edible ethanol
Technical field
The present invention relates to a kind of method producing edible ethanol.
Background technology
At the liquor industry of China, chemical industry, rubber industry, paint industry, electronics industry, photographic film and pulp production industry, pharmaceuticals industry, perfume industry, cosmetic industry etc., ethanol all plays an important role.Report according to Frost&Sullivan, China is the third-largest edible ethanol manufacturing country in the whole world.China's alcohol output accounts for the 13.5% of the whole world, after only coming U.S.'s (44%) and Brazil's (30%).In these products, fuel alcohol accounting is less than 10%, and edible ethanol accounts for more than 90%.Edible ethanol is as adding ingredient indispensable in hard beverage, its quality is increasingly subject to people's attention, particularly China is as liquor consumption big country of the world, the quality of edible ethanol quality, just seem even more important, and the impurity relating to health in ethanol is had strict content to limit by all standard, and fermentation liquid exists substantial amounts of dryness, volatile impurity, therefore dispel various impurity be produce high-purity edible ethanol excessively in need the problem of solution badly.But, the ethanol purity that the method existence of the high-purity edible ethanol of production is not energy-conservation and prepared at present is low, have the defect of evil assorted taste, foreign odor taste and degree of purity difference.
Therefore, dispelling assorted taste in ethanol is the problem needing solution in production process badly, is badly in need of now a kind of energy-saving production method that can prepare the good high-purity edible ethanol of taste.
Summary of the invention
The invention aims to overcome in prior art that edible ethanol purity is low, degree of purity is poor, there is abnormal flavour, defect that production technology is not energy-conservation, it is provided that a kind of method producing edible ethanol.
The present inventor finds under study for action, corn fermentation maturation mash is carried out rectification through the thick tower of one-level, the two grades of thick towers being set up in parallel, then sequentially passes through stripper, purifying column, rectifying column and methanol column again and carry out rectification, obtain edible ethanol, this edible ethanol sequentially passes through activated carbon, kieselguhr carries out adsorption bleaching, prepare edible ethanol finished product, can be prepared by the edible ethanol that purity height, taste are good.Therefore, to achieve these goals, the invention provides a kind of method producing edible ethanol, the method includes: through the thick tower of one-level, the two grades of thick towers being set up in parallel, corn fermentation maturation mash is carried out rectification, then sequentially passes through stripper, purifying column, rectifying column and methanol column again and carry out rectification, obtain edible ethanol, this edible ethanol sequentially passes through activated carbon, kieselguhr carries out adsorption bleaching, prepares edible ethanol finished product.
The present invention produces in the method for edible ethanol and adds two grades of thick towers, and have employed stripper first compared to traditional edible ethanol production technology, such that it is able to effectively remove in mash the Organic substances such as alcohols, esters, aldehydes, improve the purity preparing ethanol, it addition, the taste of edible ethanol can be improved by increase activated carbon and diatomite adsorption decolorization process.Further, since increase one-level thick column overhead steam can as the thermal source of two grades of thick towers, and stripper overhead steam can as the thermal source of methanol column, therefore, whole production method energy-conserving and environment-protective.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Detailed description of the invention
Hereinafter the specific embodiment of the present invention is described in detail.It should be appreciated that detailed description of the invention described herein is merely to illustrate and explains the present invention, it is not limited to the present invention.
The invention provides a kind of method producing edible ethanol, the method includes: through the thick tower of one-level, the two grades of thick towers being set up in parallel, corn fermentation maturation mash is carried out rectification, then sequentially passes through stripper, purifying column, rectifying column and methanol column again and carry out rectification, obtain edible ethanol, this edible ethanol sequentially passes through activated carbon, kieselguhr carries out adsorption bleaching, prepares edible ethanol finished product.
In the present invention, corn fermentation maturation mash through the thick tower of one-level being set up in parallel, two grades of thick towers carry out rectification, then stripper is sequentially passed through again, purifying column, rectifying column and methanol column carry out the mode of rectification: enter in stripper after two grades of thick column overhead steam coolings and carry out rectification, then the steam of stripper overhead is passed directly at the bottom of purifying column tower, tap water is entered from purifying column tower top, making the content of ethanol in tap water is 10 volume %, this 10 volume % alcoholic solution is passed into rectifying column carries out rectification, methanol column is entered after the cooling of rectifying column overhead vapours, at methanol tower top separating methanol, edible ethanol is obtained at the bottom of tower, additionally, each tower side is adopted the component that mouth flows out enter another rectifying column carries out rectification, prepare industrial alcohol.
According to method of the present invention, wherein, as long as adopting said method to can be prepared by the edible ethanol that purity height, taste are good, but, so that produce edible ethanol purity is higher, taste more preferably, it is preferable that relative to 1kg edible ethanol, the consumption of activated carbon is 0.5g-0.7g, and diatomaceous consumption is 0.05-0.07g.
According to method of the present invention, wherein, described stripper can be the stripper that this area is conventional, but, so that impurity in the steam of stripper overhead is less so that the edible ethanol purity prepared is higher, taste more preferably, it is preferable that, described stripper is provided with discharging the impurities removal pipeline of normal propyl alcohol, Alcohols,fusel and tail level impurity, and the quantity of described impurities removal pipeline is 8-10.
In the present invention, the thick tower of one-level, two grades of thick towers, purifying column, rectifying column and methanol column are the equipment that this area is conventional, wherein, the position that " one-level " and " two grades " in the thick tower of one-level, two grades of thick towers is intended merely to difference same equipment is different, is not the restriction to thick tower kind and order.
In the present invention, all can be provided with side Cai Kou by each tower, in order to discharge impurity.Wherein, the side of each tower is adopted mouth and can also be connected with another rectifying column so that each tower side is adopted the component that mouth flows out and entered and carry out rectification in another rectifying column, prepares industrial alcohol.
What it should be appreciated by those skilled in the art is, the thick tower of one-level, two grades of thick towers, stripper, purifying column, rectifying column and methanol column can realize each tower and remove impurity successively by controlling the condition of each tower rectification so that the purity of prepared edible ethanol is high, taste is good.
The present invention, pressure refers to absolute pressure.
According to method of the present invention, it is preferable that in stripper, the condition of rectification includes: tower middle portion temperature is 98-102 DEG C, tower top temperature is 80-84 DEG C, pressure at the bottom of tower is 15-19Psia, and tower top pressure is 15.2-15.6Psia, it is possible to make to produce edible ethanol purity is higher, taste more preferably.
According to method of the present invention, in the thick tower of described one-level, the condition of rectification can be the rectification condition that this area is conventional, for instance may include that column bottom temperature is 106-110 DEG C, tower top temperature is 88-92 DEG C, tower bottom pressure is 21.4-21.8Psia, and tower top pressure is 17.2-17.8Psia.
According to method of the present invention, in described two grades of thick towers, the condition of rectification can be the rectification condition that this area is conventional, for instance may include that column bottom temperature is 73-77 DEG C, tower top temperature is 63-67 DEG C, tower bottom pressure is 6.8-7.2Psia, and tower top pressure is 4.3-4.7Psia.
According to method of the present invention, in described purifying column, the condition of rectification can be the rectification condition that this area is conventional, such as may include that tower top temperature is 101-103 DEG C, what it should be appreciated by those skilled in the art is, pass into after the steam cooling of two grades of thick column overhead and stripper carries out rectification, then the steam of stripper overhead is passed directly at the bottom of purifying column tower, from purifying column jacking washings so that in washings, the content of ethanol is 10-20 volume %.
According to method of the present invention, in described rectifying column, the condition of rectification can be the rectification condition that this area is conventional, for instance may include that column bottom temperature is 150-155 DEG C, tower top temperature is 121-125 DEG C, tower bottom pressure is 74.2-76.2Psia, and tower top pressure is 66.7-68.7Psia.
According to method of the present invention, in described methanol column, the condition of rectification can be the rectification condition that this area is conventional, for instance may include that column bottom temperature is 57.4-57.6 DEG C, tower top temperature is 6.39-6.59 DEG C.
According to method of the present invention, wherein, in order to energy-conservation further, it is possible to using thick for the one-level column overhead steam thermal source as two grades of thick towers.
Can as the thermal source of methanol column according to method stripper overhead steam of the present invention.
In the present invention, corn fermentation maturation mash for producing edible ethanol can the conventional corn fermentation maturation mash in this area, its preparation method can be by the maize raw material of pretreatment, starch tank spice through powder and add amylase post liquefaction, add saccharifying enzyme and enter fermentation, additionally yeast wine is also into fermentation simultaneously, and fermenting-ripening prepares ripe mash.
Embodiment
Corn fermentation maturation mash is prepared according to the method for embodiment 1 in patent application CN103773811A.
Embodiment 1
The present embodiment is for illustrating the method producing edible ethanol of the present invention.
Corn fermentation maturation mash through the thick tower of one-level being set up in parallel, two grades of thick towers carry out rectification, then stripper is sequentially passed through again, purifying column, rectifying column and methanol column carry out rectification, obtain edible ethanol, wherein, in distillation process, enter in stripper after two grades of thick column overhead steam coolings and carry out rectification, then the steam of stripper overhead is passed directly at the bottom of purifying column tower, tap water is entered from purifying column tower top, making the content of ethanol in tap water is 10 volume %, this 10 volume % alcoholic solution is passed into rectifying column carries out rectification, methanol column is entered after the cooling of rectifying column overhead vapours, at methanol tower top separating methanol, edible ethanol is obtained at the bottom of tower, additionally, each tower side is adopted the component that mouth flows out enter another rectifying column carries out rectification, prepare industrial alcohol.And the column bottom temperature controlling the thick tower of one-level is 106 DEG C, tower top temperature is 88 DEG C, and tower bottom pressure is 21.4Psia, and tower top pressure is 17.2Psia;The column bottom temperature of two grades of thick towers is 73 DEG C, and tower top temperature is 63 DEG C, and tower bottom pressure is 6.8Psia, and tower top pressure is 4.3Psia;The tower middle portion temperature of stripper is 98 DEG C, and tower top temperature is 80 DEG C, and the pressure at the bottom of tower is 15Psia, and tower top pressure is 15.2Psia;The tower top temperature of purifying column is 101 DEG C;The column bottom temperature of rectifying column is 150 DEG C, and tower top temperature is 121 DEG C, and tower bottom pressure is 74.2Psia, and tower top pressure is 66.7Psia;The column bottom temperature of methanol column is 57.4 DEG C, and tower top temperature is 6.39 DEG C.Then 10kg edible ethanol is sequentially passed through 7g activated carbon, 0.7g kieselguhr carries out adsorption bleaching, preparing edible ethanol finished product, wherein, one-level thick column overhead steam is as the thermal source of two grades of thick towers, and using the stripper overhead steam thermal source as methanol column, whole production process energy-conservation 15%.
Embodiment 2
The present embodiment is for illustrating the method producing edible ethanol of the present invention.
Corn fermentation maturation mash through the thick tower of one-level being set up in parallel, two grades of thick towers carry out rectification, then stripper is sequentially passed through again, purifying column, rectifying column and methanol column carry out rectification, obtain edible ethanol, wherein, in distillation process, enter in stripper after two grades of thick column overhead steam coolings and carry out rectification, then the steam of stripper overhead is passed directly at the bottom of purifying column tower, tap water is entered from purifying column tower top, making the content of ethanol in tap water is 15 volume %, this 15 volume % alcoholic solution is passed into rectifying column carries out rectification, methanol column is entered after the cooling of rectifying column overhead vapours, at methanol tower top separating methanol, edible ethanol is obtained at the bottom of tower, additionally, each tower side is adopted the component that mouth flows out enter another rectifying column carries out rectification, prepare industrial alcohol.And the column bottom temperature controlling the thick tower of one-level is 108 DEG C, tower top temperature is 90 DEG C, and tower bottom pressure is 21.6Psia, and tower top pressure is 17.6Psia;The column bottom temperature of two grades of thick towers is 75 DEG C, and tower top temperature is 65 DEG C, and tower bottom pressure is 7Psia, and tower top pressure is 4.5Psia;The tower middle portion temperature of stripper is 100 DEG C, and tower top temperature is 82 DEG C, and the pressure at the bottom of tower is 17Psia, and tower top pressure is 15.4Psia;The tower top temperature of purifying column is 102 DEG C;The column bottom temperature of rectifying column is 152 DEG C, and tower top temperature is 123 DEG C, and tower bottom pressure is 75Psia, and tower top pressure is 67Psia;The column bottom temperature of methanol column is 57.5 DEG C, and tower top temperature is 6.5 DEG C.Then 10kg edible ethanol is sequentially passed through 6g activated carbon, 0.7g kieselguhr carries out adsorption bleaching, preparing edible ethanol finished product, wherein, one-level thick column overhead steam is as the thermal source of two grades of thick towers, and using the stripper overhead steam thermal source as methanol column, whole production process energy-conservation 20%.
Embodiment 3
The present embodiment is for illustrating the method producing edible ethanol of the present invention.
Corn fermentation maturation mash through the thick tower of one-level being set up in parallel, two grades of thick towers carry out rectification, then stripper is sequentially passed through again, purifying column, rectifying column and methanol column carry out rectification, obtain edible ethanol, wherein, in distillation process, enter in stripper after two grades of thick column overhead steam coolings and carry out rectification, then the steam of stripper overhead is passed directly at the bottom of purifying column tower, tap water is entered from purifying column tower top, making the content of ethanol in tap water is 20 volume %, this 20 volume % alcoholic solution is passed into rectifying column carries out rectification, methanol column is entered after the cooling of rectifying column overhead vapours, at methanol tower top separating methanol, edible ethanol is obtained at the bottom of tower, additionally, each tower side is adopted the component that mouth flows out enter another rectifying column carries out rectification, prepare industrial alcohol.And the column bottom temperature controlling the thick tower of one-level is 110 DEG C, tower top temperature is 92 DEG C, and tower bottom pressure is 21.8Psia, and tower top pressure is 17.8Psia;The column bottom temperature of two grades of thick towers is 77 DEG C, and tower top temperature is 67 DEG C, and tower bottom pressure is 7.2Psia, and tower top pressure is 4.7Psia;The tower middle portion temperature of stripper is 102 DEG C, and tower top temperature is 84 DEG C, and the pressure at the bottom of tower is 19Psia, and tower top pressure is 15.6Psia;The tower top temperature of purifying column is 103 DEG C;The column bottom temperature of rectifying column is 155 DEG C, and tower top temperature is 125 DEG C, and tower bottom pressure is 76.2Psia, and tower top pressure is 68.7Psia;The column bottom temperature of methanol column is 57.6 DEG C, and tower top temperature is 6.59 DEG C.Then 10kg edible ethanol is sequentially passed through 5g activated carbon, 0.5g kieselguhr carries out adsorption bleaching, preparing edible ethanol finished product, wherein, one-level thick column overhead steam is as the thermal source of two grades of thick towers, and using the stripper overhead steam thermal source as methanol column, whole production process energy-conservation 25%.
Embodiment 4
The present embodiment is for illustrating the method producing edible ethanol of the present invention.
According to the method edible ethanol of embodiment 1, the difference is that, relative to the edible ethanol of 10kg, the consumption of activated carbon is 4g, and diatomaceous consumption is 0.85g, prepares edible ethanol finished product.
Comparative example 1
Edible ethanol is produced according to the method for embodiment 1, the difference is that, omit the step of stripper rectification, prepare edible ethanol finished product.
Comparative example 2
Edible ethanol is produced according to the method for embodiment 1, the difference is that, omit activated carbon and the step of diatomite adsorption decolouring, prepare edible ethanol finished product.
Test case
According to GB10343-2008, the edible ethanol finished product prepared in embodiment 1-4 and comparative example 1-2 being carried out sensory evaluation, evaluation result is in Table 1.
Use the edible ethanol finished product prepared in Agilent gas chromatograph for determination embodiment 1-4 and comparative example 1-2 become to be grouped into, test result is in Table 2.
Table 1
Embodiment Judge result
Embodiment 1 Water white transparency;There is the intrinsic fragrance of ethanol;Pure, micro-sweet;
Embodiment 2 Water white transparency;There is the intrinsic fragrance of ethanol;Pure, micro-sweet;
Embodiment 3 Water white transparency;There is the intrinsic fragrance of ethanol;Pure, micro-sweet;
Embodiment 4 Water white transparency;There is the intrinsic fragrance of ethanol;Pure, micro-sweet;
Comparative example 1 Water white transparency;Free from extraneous odour;Pure, micro-sweet;
Comparative example 2 Water white transparency;Without foreign odor;Purer;
Table 2
By being compared by embodiment 1-4 and comparative example 1-2 it can be seen that purity of alcohol is high, impurity content is low in the edible ethanol finished product of the method production of the present invention, and its taste is also preferably, and whole production process is energy-conservation.
Embodiment 1 is compared with embodiment 4 it can be seen that when relative to 1kg edible ethanol, the consumption of activated carbon is 0.5g-0.7g, and diatomaceous consumption is 0.05-0.07g, it is possible to such that the edible ethanol purity produced is higher, taste more preferably.
The present invention produces in the method for edible ethanol and adds two grades of thick towers, and have employed stripper first compared to traditional edible ethanol production technology, such that it is able to effectively remove in mash the Organic substances such as alcohols, esters, aldehydes, improve the purity preparing ethanol, it addition, the taste of edible ethanol can be improved by increase activated carbon and diatomite adsorption decolorization process.Further, since increase one-level thick column overhead steam can as the thermal source of two grades of thick towers, and stripper overhead steam can as the thermal source of methanol column, therefore, whole production method energy-conserving and environment-protective.
The preferred embodiment of the present invention described in detail above; but, the present invention is not limited to the detail in above-mentioned embodiment, in the technology concept of the present invention; technical scheme can being carried out multiple simple variant, these simple variant belong to protection scope of the present invention.
It is further to note that, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, it is possible to be combined by any suitable mode, in order to avoid unnecessary repetition, various possible compound modes are no longer illustrated by the present invention separately.
Additionally, can also carry out combination in any between the various different embodiment of the present invention, as long as it is without prejudice to the thought of the present invention, it should be considered as content disclosed in this invention equally.

Claims (11)

1. the method producing edible ethanol, it is characterized in that, the method includes: through the thick tower of one-level, the two grades of thick towers being set up in parallel, corn fermentation maturation mash is carried out rectification, then sequentially passes through stripper, purifying column, rectifying column and methanol column again and carry out rectification, obtain edible ethanol, this edible ethanol sequentially passes through activated carbon, kieselguhr carries out adsorption bleaching, prepares edible ethanol finished product.
2. method according to claim 1, wherein, relative to 1kg edible ethanol, the consumption of activated carbon is 0.5g-0.7g, and diatomaceous consumption is 0.05-0.07g.
3. method according to claim 1, wherein, described stripper is provided with discharging the impurities removal pipeline of normal propyl alcohol, Alcohols,fusel and tail level impurity, and the quantity of described impurities removal pipeline is 8-10.
4. method according to claim 1, wherein, in described stripper, the condition of rectification includes: tower middle portion temperature is 98-102 DEG C, and tower top temperature is 80-84 DEG C, and the pressure at the bottom of tower is 15-19Psia, and tower top pressure is 15.2-15.6Psia.
5. method according to claim 1, wherein, in the thick tower of described one-level, the condition of rectification includes: column bottom temperature is 106-110 DEG C, and tower top temperature is 88-92 DEG C, and tower bottom pressure is 21.4-21.8Psia, and tower top pressure is 17.2-17.8Psia.
6. method according to claim 1, wherein, in described two grades of thick towers, the condition of rectification includes: column bottom temperature is 73-77 DEG C, and tower top temperature is 63-67 DEG C, and tower bottom pressure is 6.8-7.2Psia, and tower top pressure is 4.3-4.7Psia.
7. method according to claim 1, wherein, in described purifying column, the condition of rectification includes: tower top temperature is 101-103 DEG C.
8. method according to claim 1, wherein, in described rectifying column, the condition of rectification includes: column bottom temperature is 150-155 DEG C, and tower top temperature is 121-125 DEG C, and tower bottom pressure is 74.2-76.2Psia, and tower top pressure is 66.7-68.7Psia.
9. method according to claim 1, wherein, in described methanol column, the condition of rectification includes: column bottom temperature is 57.4-57.6 DEG C, and tower top temperature is 6.39-6.59 DEG C.
10. method according to claim 1, wherein, using thick for the described one-level column overhead steam thermal source as described two grades of thick towers.
11. method according to claim 1, wherein, using the described stripper overhead steam thermal source as methanol column.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109876486A (en) * 2019-04-03 2019-06-14 广东中科天元新能源科技有限公司 A kind of eight column differential-pressure distillation device of superfine alcohol and energy-saving processing technique

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CN1086849A (en) * 1993-09-01 1994-05-18 王大明 The distillating method of high grade edible spirit
CN1880435A (en) * 2006-04-30 2006-12-20 广东中科天元再生资源工程有限公司 Six-column differential-pressure distillation device for extra edible alcohol and process therefor
CN101153257A (en) * 2007-09-27 2008-04-02 广州保捷机电有限公司 Five-tower two-grade difference pressure distillation equipment for senior edible ethanol and technique thereof
CN102503771A (en) * 2011-10-12 2012-06-20 中粮生物化学(安徽)股份有限公司 Refining system and method of ethanol-containing aqueous solution
CN204017520U (en) * 2014-06-13 2014-12-17 中粮生化能源(肇东)有限公司 A kind of alcohol purification equipment

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Publication number Priority date Publication date Assignee Title
JPS61158774A (en) * 1984-12-29 1986-07-18 Tokyo Electric Power Co Inc:The Device for purifying ethanol
CN1086849A (en) * 1993-09-01 1994-05-18 王大明 The distillating method of high grade edible spirit
CN1880435A (en) * 2006-04-30 2006-12-20 广东中科天元再生资源工程有限公司 Six-column differential-pressure distillation device for extra edible alcohol and process therefor
CN101153257A (en) * 2007-09-27 2008-04-02 广州保捷机电有限公司 Five-tower two-grade difference pressure distillation equipment for senior edible ethanol and technique thereof
CN102503771A (en) * 2011-10-12 2012-06-20 中粮生物化学(安徽)股份有限公司 Refining system and method of ethanol-containing aqueous solution
CN204017520U (en) * 2014-06-13 2014-12-17 中粮生化能源(肇东)有限公司 A kind of alcohol purification equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109876486A (en) * 2019-04-03 2019-06-14 广东中科天元新能源科技有限公司 A kind of eight column differential-pressure distillation device of superfine alcohol and energy-saving processing technique

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